20020528 has 40 divisors (see below), whose sum is σ = 44550720. Its totient is φ = 8619840.

The previous prime is 20020501. The next prime is 20020531. The reversal of 20020528 is 82502002.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351 + ... + 6337.

It is an arithmetic number, because the mean of its divisors is an integer number (1113768).

Almost surely, 2^20020528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20020528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22275360).

20020528 is an abundant number, since it is smaller than the sum of its proper divisors (24530192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20020528 is a wasteful number, since it uses less digits than its factorization.

20020528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6025 (or 6019 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 20020528 is about 4474.4304665510. The cubic root of 20020528 is about 271.5345991786.

The spelling of 20020528 in words is "twenty million, twenty thousand, five hundred twenty-eight".